https://dblevel.app/guides/ Guides to sound levels, noise and hearing from the makers of the Decibel Meter app. en-gbTue, 10 Nov 2026 07:00:00 +0000 https://dblevel.app/guides/workplace-noise-limits/https://dblevel.app/guides/workplace-noise-limits/Tue, 10 Nov 2026 07:00:00 +0000Workplace noise limits explained: the UK's 80, 85 and 87 dB(A) action values, OSHA's 90 dB(A) limit, NIOSH's 85 dB(A) advice and what employers must do. https://dblevel.app/guides/white-noise-machine-baby/https://dblevel.app/guides/white-noise-machine-baby/Tue, 10 Nov 2026 07:00:00 +0000Safe white noise volume for babies: why around 50 dB at the cot is the usual target, what research found about sleep machines, and how to check yours. https://dblevel.app/guides/what-is-a-decibel/https://dblevel.app/guides/what-is-a-decibel/Tue, 10 Nov 2026 07:00:00 +0000What a decibel is, why the scale is logarithmic, why +3 dB doubles the energy but +10 dB sounds twice as loud, and how to add decibels together. https://dblevel.app/guides/safe-decibel-levels/https://dblevel.app/guides/safe-decibel-levels/Tue, 10 Nov 2026 07:00:00 +0000What decibel level is safe? Why 85 dB matters, how long you can listen at each level, the 3 dB rule, and the signs that noise is damaging your hearing. https://dblevel.app/guides/noisy-neighbours/https://dblevel.app/guides/noisy-neighbours/Tue, 10 Nov 2026 07:00:00 +0000How to measure neighbour noise with a decibel meter, keep a noise log a council can use, and what levels count as too loud at night in the UK. https://dblevel.app/guides/measure-decibels-with-phone/https://dblevel.app/guides/measure-decibels-with-phone/Tue, 10 Nov 2026 07:00:00 +0000How to measure noise in decibels with your phone: which settings to use, where to hold it, how long to measure, and the mistakes that skew readings. https://dblevel.app/guides/leq-l10-l90-explained/https://dblevel.app/guides/leq-l10-l90-explained/Tue, 10 Nov 2026 07:00:00 +0000What do Leq, LAeq, L10, L50, L90, LAmax, LCpeak and SEL mean? A plain-English guide to the noise statistics on sound level meters and in noise reports. https://dblevel.app/guides/find-humming-noise/https://dblevel.app/guides/find-humming-noise/Tue, 10 Nov 2026 07:00:00 +0000Track down a low humming noise by its frequency. Common hum sources at 50, 60, 100 and 120 Hz, how to use a spectrum analyser, and what to do next. https://dblevel.app/guides/decibel-chart/https://dblevel.app/guides/decibel-chart/Tue, 10 Nov 2026 07:00:00 +0000How loud is 60 dB, 85 dB or 100 dB? A decibel chart of everyday sounds, from a whisper to a jet engine, with what each level means for your hearing. https://dblevel.app/guides/dba-vs-dbc-vs-dbz/https://dblevel.app/guides/dba-vs-dbc-vs-dbz/Tue, 10 Nov 2026 07:00:00 +0000What's the difference between dB(A), dB(C) and dB(Z)? How frequency weighting works, which one to use for hearing, music, bass and workplace noise. https://dblevel.app/guides/concert-noise-levels/https://dblevel.app/guides/concert-noise-levels/Tue, 10 Nov 2026 07:00:00 +0000Concerts and nightclubs typically run at 95 to 110 dB. How loud gigs really are, how long you can safely stay, and earplugs that don't spoil the music. https://dblevel.app/guides/calibrate-decibel-meter-app/https://dblevel.app/guides/calibrate-decibel-meter-app/Tue, 10 Nov 2026 07:00:00 +0000Three ways to calibrate a sound level meter app: against a reference meter, with an acoustic calibrator, or with a known sound. Plus how to check it. https://dblevel.app/guides/best-decibel-meter-app/https://dblevel.app/guides/best-decibel-meter-app/Tue, 10 Nov 2026 07:00:00 +0000How to choose a decibel meter app for Android: the features that make readings trustworthy, the red flags to avoid, and what Decibel Meter does differently. https://dblevel.app/guides/are-decibel-meter-apps-accurate/https://dblevel.app/guides/are-decibel-meter-apps-accurate/Tue, 10 Nov 2026 07:00:00 +0000How accurate is a phone decibel meter? What research found, why many apps drift, what affects accuracy and when you need a certified sound level meter instead.